Heads up, moms! Be Amazing! Toys is recalling about 15,000 of its Monster Science Colossal Water Balls and Super Star Science! Colossal Water Balls in the United States and Canada because the marble-sized toys can be easily mistaken for candy, and when ingested, they can expand inside a child's body and cause intestinal obstructions. No injuries have been reported, but the CPSC says an 8-month-old girl ingested a similar product and it had to be surgically removed.